Boron (IPA: ) is a chemical element with atomic number 5 and the chemical symbol B. A trivalent compound containing boron occurs abundantly in the ore borax. Boron is never found free in nature, and is a metalloid.
Boric acid Boron nitride Borax Rhenium diboride Borate Ultratrace element Sodium tetraborate Fiberglass Colemanite Oxygen Ulexite Sodium Aneutronic fusion Physical vapor deposition Vladimir Prelog Chemical vapor deposition Hydrogen Mohs scale of mineral hardness Cosmic ray Nutrient Water (molecule) Redox Ore Semiconductor Magnesium Nuclear power Aluminium Heterodiamond Boromycin Halo nucleus Energetic material Boron deficiency (plant disorder) Superhard materials Rosocyanine Resonances Carbon International Programme on Chemical Safety Hydroboration-oxidation reaction Single event upset Kernite
